4 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
10 Usage: ${0##*/} [OPTION]
11 If grub var set, act like pxe rom and pxe-kexec to faiserver
13 -f|--force do kexec if we can reach faiserver
14 -h|--help Print help and exit.
16 Note: Uses GNU getopt options parsing style
23 # Keep it short so we don't delay too much wnen we don't have networking.
24 # In practice, on my home network, on an x200, it took 15 seconds, so
25 # give it an extra 10 seconds, which seems fairly short as I write this.
26 NETWORK_TIMOUT_SECS
=25
29 m
() { printf "%s\n" "$*"; "$@"; }
32 deadline
=$
(( `date +%s` + NETWORK_TIMOUT_SECS
))
33 while ! timeout
-s 9 3 nc
-zu faiserver
69; do
34 if (( `date +%s` > deadline
)); then
35 echo "fai-check: hit $NETWORK_TIMOUT_SECS s tftp server timeout"
40 m pxe-kexec
-n --ignore-whitelist -l fai-generated faiserver ||
:
51 for dev
in $
(btrfs
fi show
/ |
sed -rn 's#^\s*devid\s.*\s([^0-9 ]+)\S+$#\1#p' \
56 if [[ -e /mnt
/grubenv
]]; then
58 source <(grub-editenv
/mnt
/grubenv list
)
62 # we could just as well check if last_boot != /debianbuster_boostrap
63 # the intent with this one is just a little clearer.
64 if [[ $did_fai_check == true
]]; then
65 grub-editenv
/mnt
/grubenv
set did_fai_check
=os_true
66 # our service does not wait for network-online.target,
67 # because it will wait for too long when we don't have a network
68 # connection. So, we wait for 10 seconds.
69 # ref: https://www.freedesktop.org/wiki/Software/systemd/NetworkTarget/
73 # we make sure there is only 1 grubenv,
74 # so grub can just find the first one, in whatever order
75 # if looks at them, which may not be the same as us.
76 # If the disk dies, we just lose the default boot option,
77 # we will have to do manual steps to replace it anyways.
83 # the check for last_boot is not needed afaik, just sanity check.
84 if [[ $did_fai_check == true
&& $last_boot != /debianbuster_boostrap
]]; then
85 # no need to reboot if we actually want to boot into this os.